DB: To use identity column or not?

Question

While designing a table my colleague here says that I should avoid identity column as it is specific to SQL Server and MS Access, But I differ with his views as it makes my codi

Answer 1

Use Identity column!

It does separate your "Application Logic" from "Business Logic."

Let's say you use "email" as primary key (which does make sense in term of "business logic"). You'll get into trouble when that email no longer exists and your user wants to edit your email.